<template>
  <div class="pet-login-container">
    <!-- 背景装饰元素 -->
    <div class="pet-background">
      <div
        class="paw-print"
        v-for="(paw, index) in pawPrints"
        :key="index"
        :style="{
          left: paw.x + 'px',
          top: paw.y + 'px',
          transform: `rotate(${paw.rotate}deg)`,
        }"
      >
        <i class="fas fa-paw"></i>
      </div>
      <div
        class="pet-decoration"
        v-for="(decoration, index) in decorations"
        :key="'decoration' + index"
        :style="{ left: decoration.x + 'px', top: decoration.y + 'px' }"
      >
        <i :class="decoration.icon"></i>
      </div>
    </div>

    <!-- 登录表单 -->
    <div class="pet-login-form">
      <div class="pet-logo">
        <i class="fas fa-paw"></i>
        <span>Paw Lint Hub</span>
      </div>

      <h2 class="pet-welcome">欢迎回来</h2>
      <p class="pet-subtitle">与爱宠一起探索美好世界</p>

      <div class="form-wrap">
        <el-form
          ref="loginRef"
          :model="loginForm"
          :rules="loginRules"
          class="login-form"
        >
          <el-form-item prop="username">
            <el-input
              v-model="loginForm.username"
              type="text"
              size="large"
              auto-complete="off"
              placeholder="账号"
            >
              <template #prefix
                ><svg-icon icon-class="user" class="el-input__icon input-icon"
              /></template>
            </el-input>
          </el-form-item>
          <el-form-item prop="password">
            <el-input
              v-model="loginForm.password"
              type="password"
              size="large"
              auto-complete="off"
              placeholder="密码"
              @keyup.enter="handleLogin"
            >
              <template #prefix
                ><svg-icon
                  icon-class="password"
                  class="el-input__icon input-icon"
              /></template>
            </el-input>
          </el-form-item>
          <el-form-item prop="code" v-if="captchaEnabled">
            <el-input
              v-model="loginForm.code"
              size="large"
              auto-complete="off"
              placeholder="验证码"
              style="width: 63%"
              @keyup.enter="handleLogin"
            >
              <template #prefix
                ><svg-icon
                  icon-class="validCode"
                  class="el-input__icon input-icon"
              /></template>
            </el-input>
            <div class="login-code">
              <img :src="codeUrl" @click="getCode" class="login-code-img" />
            </div>
          </el-form-item>
          <el-checkbox
            v-model="loginForm.rememberMe"
            style="margin: 0px 0px 25px 0px"
            >记住密码</el-checkbox
          >
          <el-form-item style="width: 100%">
            <el-button
              :loading="loading"
              size="large"
              type="primary"
              style="width: 100%"
              @click.prevent="handleLogin"
            >
              <span v-if="!loading">登 录</span>
              <span v-else>登 录 中...</span>
            </el-button>
            <div style="float: right" v-if="register">
              <router-link class="link-type" :to="'/register'"
                >立即注册</router-link
              >
            </div>
          </el-form-item>
        </el-form>
      </div>

      <div class="pet-register-link">
        还没有账户？ <a href="#" @click.prevent="handleRegister">立即注册</a>
      </div>
    </div>
  </div>
</template>

<script setup>
import { getCodeImg } from '@/api/login';
import Cookies from 'js-cookie';
import { encrypt, decrypt } from '@/utils/jsencrypt';
import useUserStore from '@/store/modules/user';

const title = import.meta.env.VITE_APP_TITLE;
const userStore = useUserStore();
const route = useRoute();
const router = useRouter();
const { proxy } = getCurrentInstance();

const loginForm = ref({
  username: 'admin',
  password: 'admin123',
  rememberMe: false,
  code: '',
  uuid: '',
});

const loginRules = {
  username: [{ required: true, trigger: 'blur', message: '请输入您的账号' }],
  password: [{ required: true, trigger: 'blur', message: '请输入您的密码' }],
  code: [{ required: true, trigger: 'change', message: '请输入验证码' }],
};

const codeUrl = ref('');
const loading = ref(false);
// 验证码开关
const captchaEnabled = ref(true);
// 注册开关
const register = ref(false);
const redirect = ref(undefined);

watch(
  route,
  (newRoute) => {
    redirect.value = newRoute.query && newRoute.query.redirect;
  },
  { immediate: true }
);

function handleLogin() {
  proxy.$refs.loginRef.validate((valid) => {
    if (valid) {
      loading.value = true;
      // 勾选了需要记住密码设置在 cookie 中设置记住用户名和密码
      if (loginForm.value.rememberMe) {
        Cookies.set('username', loginForm.value.username, { expires: 30 });
        Cookies.set('password', encrypt(loginForm.value.password), {
          expires: 30,
        });
        Cookies.set('rememberMe', loginForm.value.rememberMe, { expires: 30 });
      } else {
        // 否则移除
        Cookies.remove('username');
        Cookies.remove('password');
        Cookies.remove('rememberMe');
      }
      // 调用action的登录方法
      userStore
        .login(loginForm.value)
        .then(() => {
          const query = route.query;
          const otherQueryParams = Object.keys(query).reduce((acc, cur) => {
            if (cur !== 'redirect') {
              acc[cur] = query[cur];
            }
            return acc;
          }, {});
          router.push({ path: redirect.value || '/', query: otherQueryParams });
        })
        .catch(() => {
          loading.value = false;
          // 重新获取验证码
          if (captchaEnabled.value) {
            getCode();
          }
        });
    }
  });
}

function getCode() {
  getCodeImg().then((res) => {
    captchaEnabled.value =
      res.captchaEnabled === undefined ? true : res.captchaEnabled;
    if (captchaEnabled.value) {
      codeUrl.value = 'data:image/gif;base64,' + res.img;
      loginForm.value.uuid = res.uuid;
    }
  });
}

function getCookie() {
  const username = Cookies.get('username');
  const password = Cookies.get('password');
  const rememberMe = Cookies.get('rememberMe');
  loginForm.value = {
    username: username === undefined ? loginForm.value.username : username,
    password:
      password === undefined ? loginForm.value.password : decrypt(password),
    rememberMe: rememberMe === undefined ? false : Boolean(rememberMe),
  };
}

// 宠物主题相关数据
const pawPrints = ref([]);
const decorations = ref([]);

// 生成爪印装饰
const generatePawPrints = () => {
  const prints = [];
  for (let i = 0; i < 20; i++) {
    prints.push({
      x: Math.random() * window.innerWidth,
      y: Math.random() * window.innerHeight,
      rotate: Math.random() * 360,
    });
  }
  pawPrints.value = prints;
};

// 生成宠物装饰元素
const generateDecorations = () => {
  const decos = [];
  const icons = [
    'fas fa-bone',
    'fas fa-cat',
    'fas fa-dog',
    'fas fa-fish',
    'fas fa-paw',
  ];

  for (let i = 0; i < 8; i++) {
    decos.push({
      x: Math.random() * window.innerWidth,
      y: Math.random() * window.innerHeight,
      icon: icons[Math.floor(Math.random() * icons.length)],
    });
  }
  decorations.value = decos;
};

onMounted(() => {
  generatePawPrints();
  generateDecorations();
  getCode();
  getCookie();
});
</script>

<style lang="scss" scoped>
.pet-login-container {
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  background: linear-gradient(135deg, #f9f5f0 0%, #ffd8c9 100%);
  position: relative;
  overflow: hidden;

  .pet-background {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    z-index: 0;

    .paw-print {
      position: absolute;
      color: rgba(255, 158, 128, 0.2);
      font-size: 24px;
    }

    .pet-decoration {
      position: absolute;
      color: rgba(255, 158, 128, 0.3);
      font-size: 28px;
    }
  }

  .pet-login-form {
    width: 600px;
    padding: 40px;
    background: rgba(255, 255, 255, 0.95);
    border-radius: 20px;
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
    z-index: 1;
    backdrop-filter: blur(10px);

    .pet-logo {
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 20px;

      i {
        font-size: 32px;
        color: #ff9e80;
        margin-right: 10px;
      }

      span {
        font-size: 28px;
        font-weight: 700;
        color: #5a3921;
      }
    }

    .pet-welcome {
      text-align: center;
      color: #5a3921;
      margin-bottom: 10px;
    }

    .pet-subtitle {
      text-align: center;
      color: #8d6e63;
      margin-bottom: 30px;
    }

    .pet-login-form-content {
      .pet-input {
        :deep(.el-input__wrapper) {
          border-radius: 12px;
          background: #fff;
          box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);

          &.is-focus {
            box-shadow: 0 0 0 1px #ff9e80 inset, 0 2px 8px rgba(0, 0, 0, 0.05);
          }
        }
      }

      .pet-remember {
        color: #8d6e63;

        :deep(.el-checkbox__input.is-checked .el-checkbox__inner) {
          background-color: #ff9e80;
          border-color: #ff9e80;
        }
      }

      .pet-login-btn {
        width: 100%;
        height: 48px;
        border-radius: 12px;
        background: linear-gradient(135deg, #ff9e80, #ffb6c1);
        border: none;
        font-size: 16px;
        font-weight: 600;
        box-shadow: 0 4px 15px rgba(255, 158, 128, 0.4);
        transition: all 0.3s;

        &:hover {
          transform: translateY(-3px);
          box-shadow: 0 7px 20px rgba(255, 158, 128, 0.5);
        }
      }
    }

    .pet-register-link {
      text-align: center;
      margin-top: 25px;
      color: #8d6e63;

      a {
        color: #ff9e80;
        text-decoration: none;
        font-weight: 500;

        &:hover {
          text-decoration: underline;
        }
      }
    }
  }

  .login-form {
    border-radius: 6px;
    background: #ffffff;
    width: 400px;
    margin: auto;
    z-index: 1;
    .el-input {
      height: 40px;
      input {
        height: 40px;
      }
    }
    .input-icon {
      height: 39px;
      width: 14px;
      margin-left: 0px;
    }
  }
  .login-tip {
    font-size: 13px;
    text-align: center;
    color: #bfbfbf;
  }
  .login-code {
    width: 33%;
    height: 40px;
    float: right;
    img {
      cursor: pointer;
      vertical-align: middle;
    }
  }
  .el-login-footer {
    height: 40px;
    line-height: 40px;
    position: fixed;
    bottom: 0;
    width: 100%;
    text-align: center;
    color: #fff;
    font-family: Arial;
    font-size: 12px;
    letter-spacing: 1px;
  }
  .login-code-img {
    height: 40px;
    padding-left: 12px;
  }
}

// 响应式调整
@media (max-width: 768px) {
  .pet-login-container {
    .pet-login-form {
      width: 90%;
      padding: 30px 20px;
    }
  }
}
</style>
